diff --git a/nix/system/default.nix b/nix/system/default.nix
index b5d51ba..018abe3 100644
--- a/nix/system/default.nix
+++ b/nix/system/default.nix
@@ -3,6 +3,12 @@
 {
   imports = importAll [] ./.;
 
+  networking = {
+    computerName = "Alyxia's MacBook Pro";
+    hostName = "alymac";
+    localHostName = "alymac";
+  };
+
   users.users.alyxia = {
     name = "alyxia";
     home = "/Users/alyxia";
diff --git a/nix/system/preferences.nix b/nix/system/preferences.nix
new file mode 100644
index 0000000..7d52f4c
--- /dev/null
+++ b/nix/system/preferences.nix
@@ -0,0 +1,56 @@
+{ ... }:
+
+{
+  system.defaults = {
+    ActivityMonitor = {
+      IconType = 5;
+      OpenMainWindow = true;
+      SortColumn = "CPUUsage";
+      SortDirection = 0;
+    };
+
+    NSGlobalDomain = {
+      NSDocumentSaveNewDocumentsToCloud = false;
+      NSNavPanelExpandedStateForSaveMode = true;
+      NSNavPanelExpandedStateForSaveMode2 = true;
+
+      KeyRepeat = 1;
+      InitialKeyRepeat = 10;
+    };
+
+    LaunchServices.LSQuarantine = false;
+
+    finder = {
+      AppleShowAllFiles = true;
+      AppleShowAllExtensions = true;
+      ShowPathbar = true;
+      _FXShowPosixPathInTitle = true;
+    };
+
+    universalaccess = {
+      closeViewScrollWheelToggle = true;
+    };
+
+    CustomSystemPreferences = {
+      "com.apple.desktopservices" = {
+        # Don't create .DS_STORE files on network or external stores
+        DSDontWriteNetworkStores = true;
+        DSDontWriteUSBStores = true;
+      };
+      "com.apple.appstore" = {
+        WebKitDeveloperExtras = true;
+        ShowDebugMenu = true;
+      };
+      # Exists in system.defaults, but it's just one option...
+      "com.apple.SoftwareUpdate" = {
+        AutomaticCheckEnabled = true;
+        ScheduleFrequency = 1;
+        AutomaticDownload = 1;
+        CriticalUpdateInstall = 1;
+      };
+      "com.apple.commerce".AutoUpdate = true;
+
+      "org.x.X11".enable_test_extensions = true;
+    };
+  };
+}